This book provides a systematic overview of fundamental biomimetic strategies employed in the development of high-performance flexible flow sensors. Flexible flow sensing devices represent a class of flexible electronics designed for monitoring fluid dynamics across various domains, including hydrodynamics, aerodynamics, and hemodynamics. Overcoming the limitations of traditional rigid and bulky sensing systems, these devices signify a major advancement toward next-generation flow sensing technologies. It introduces several biological flow sensing enhancement mechanisms, with illustrative examples drawn from cavefish lateral line system and bristled wings of certain insects. Building on these biological principles, the book explores engineering strategies for fabricating high-performance flow sensing devices, incorporating functional materials such as ultrathin piezoelectric PZT films, soft piezoelectric nanofibers, flexible piezoresistive foams, and thermal-responsive vanadium oxides, along with bioinspired interfacial structures. Furthermore, the book presents a range of representative high-performance flow sensors, including differential pressure sensors, flow velocity sensors, high-resolution velocity sensors, directional flow sensors, and pressure/velocity fusion sensors. It also highlights practical applications of these advanced sensors in areas such as underwater exploration, flight parameter decoding, and personalized healthcare. Given its comprehensive and in-depth coverage, this book serves as a valuable reference for experienced researchers, as well as a teaching resource for graduate students.

Yonggang Jiang received his Ph.D. degree in nanomechanics from the Department of Nanomechanics from Tohoku University, Sendai, Japan, in 2009. Currently, he is Professor with the School of Mechanical Engineering and Automation at Beihang University, Director of Institute of Bionic and Micro-nano Systems, and Winner of the National Science Fund for Excellent Young Scholars. His research interests include nano/micromanufacturing, bionic sensing, and micro-electromechanical systems (MEMS).

Zhiqiang Ma received his Ph.D. degree in mechanical engineering from the School of Mechanical Engineering and Automation, Beihang University, Beijing, China, in 2021. He is currently Associate Professor with the School of Mechanical Engineering and Automation, Beihang University. His current research mainly focuses on soft micro-electromechanical systems (MEMS), micro/nano fabrication, and flow field detection.

Deyuan Zhang received his Ph.D. degree in mechanical engineering from Beihang University, Beijing, China, in 1993. He is currently Professor with the School of Mechanical Engineering and Automation, Beihang University. His research interests include nano/micro/biological manufacturing and ultrasonic vibration cutting.

Huawei Chen received his Ph.D. degree in mechanical physics from Tokyo Institute of Technology, Tokyo, Japan, in 2005. Currently, he is Professor and Dean of the School of Mechanical Engineering and Automation, Beihang University, and Winner of the National Science Fund for Distinguished Young Scholars. His research interests include micro/nano bionic surfaces, interface microfluidic behavior theory, flexible electronics, and micro-nano equipment.